Petroleum and natural gas industries—Equations and calculations for the properties of casing,tubing,drill pipe and line pipe used as casing and tubing
NORM herausgegeben am 30.12.2011
Designation standards: GB/T 20657-2011
Note: UNGÜLTIG
Publication date standards: 30.12.2011
Country: Chinese technical standard
Kategorie: Technische Normen GB